CN110310203B - Block chain transaction method and device - Google Patents
Block chain transaction method and device Download PDFInfo
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- CN110310203B CN110310203B CN201910543839.2A CN201910543839A CN110310203B CN 110310203 B CN110310203 B CN 110310203B CN 201910543839 A CN201910543839 A CN 201910543839A CN 110310203 B CN110310203 B CN 110310203B
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- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q20/00—Payment architectures, schemes or protocols
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- G06Q20/382—Payment protocols; Details thereof insuring higher security of transaction
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- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q40/00—Finance; Insurance; Tax strategies; Processing of corporate or income taxes
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Abstract
One or more embodiments of the present specification provide a blockchain transaction method and apparatus for use in a blockchain system including a plurality of consensus nodes, the blockchain system may include a plurality of sub-chains; a first sub-chain of the blockchain system includes a first node; the second sub-chain of the blockchain system also includes the first node; the method is performed by a first node, comprising: receiving an event notification that first data is included in a distributed database of the first sub-chain; acquiring the first data from a distributed database of the first sub-chain; encapsulating the first data as a transaction, the transaction comprising the first data; and sending the transaction to the second sub-chain, so that the transaction is recorded in a distributed database of the second sub-chain after being at least partially recognized by the common recognition node and verified by member nodes of the second sub-chain.
Description
Technical Field
The present disclosure relates to the field of data processing technologies, and in particular, to a blockchain transaction method and apparatus.
Background
Blockchain technology, also known as distributed ledger technology, is an emerging technology that is commonly engaged in "accounting" by several computing devices, together maintaining a complete distributed database. The blockchain technology has the characteristics of decentralization, disclosure transparency, capability of participating in database recording by each computing device and capability of rapidly performing data synchronization among the computing devices, so that the blockchain technology is widely applied in a plurality of fields.
Disclosure of Invention
In view of this, one or more embodiments of the present description provide a blockchain transaction method, apparatus, computer device, and computer-readable storage medium.
To achieve the above object, one or more embodiments of the present specification provide a blockchain transaction method applied to a blockchain system including a plurality of consensus nodes, the blockchain system may include a plurality of sub-chains; a first sub-chain of the blockchain system includes a first node; the second sub-chain of the blockchain system also includes the first node; the method is performed by a first node, comprising:
receiving an event notification that first data is included in a distributed database of the first sub-chain;
acquiring the first data from a distributed database of the first sub-chain;
encapsulating the first data as a transaction, the transaction comprising the first data;
and sending the transaction to the second sub-chain, so that the transaction is recorded in a distributed database of the second sub-chain after being at least partially recognized by the common recognition node and verified by member nodes of the second sub-chain.
In a further illustrated embodiment, the first data includes an identification of the second data and the second data; the obtaining the first data from the distributed database of the first sub-chain includes: and acquiring the second data from the distributed database of the first sub-chain based on the identification of the second data so as to acquire the first data.
In yet another illustrated embodiment, the first data further includes an event identification to demarcate a message channel in which the event is located upon receiving an event notification in which the first data is included in the distributed database of the first sub-chain.
In yet another illustrated embodiment, the first data includes financial asset data; the first node is a node corresponding to an original equity person of the financial asset data.
In yet another illustrated embodiment, the second data includes ABS asset slice data; the first node is a node corresponding to an original equity person of the ABS asset data.
In a further illustrated embodiment, the first data further includes a hash digest of the second data; the method further comprises the steps of:
acquiring first historical data of the second data from the distributed database of the first sub-chain based on the identification of the second data, wherein the first historical data comprises a hash digest (TxID) of at least one first transaction recorded in the distributed database of the first sub-chain and a hash digest of second data contained in the first transaction, and the first transaction contains the identification of the second data;
Acquiring second historical data of the second data from the distributed database of the second sub-chain based on the identification of the second data, wherein the second historical data comprises a hash digest (TxID) of at least one second transaction recorded in the distributed database of the second sub-chain and a hash digest of second data contained in the second transaction, and the second transaction contains the identification of the second data;
obtaining tracing data of the second data based on the first historical data and the second historical data, wherein the tracing data comprises a hash digest (TxID) of the at least one first transaction and a hash digest (TxID) of the at least one second transaction, and the hash digest (TxID) of the at least one first transaction and the hash digest (TxID) of the at least one second transaction which are included in the tracing data correspond to hash digests of non-repeated second data.
In yet another illustrated embodiment, the blockchain network system is configured in a hyper ledger Fabric blockchain network system; the consensus node is a sequencing node.
In yet another illustrated embodiment, the blockchain network system is a federated blockchain network system; the consensus node is a federation member node.
Accordingly, the present specification also provides a blockchain transaction device applied to a blockchain system including a plurality of consensus nodes, the blockchain system may include a plurality of sub-chains; a first sub-chain of the blockchain system includes a first node; the second sub-chain of the blockchain system also includes the first node; the device is applied to the first node end and comprises:
a receiving unit for receiving event notifications of first data being included in a distributed database of the first sub-chain;
an obtaining unit, configured to obtain the first data from a distributed database of the first sub-chain;
the packaging unit is used for packaging the first data into a transaction, wherein the transaction comprises the first data;
and the sending unit is used for sending the transaction to the second sub-chain so that the transaction is recorded in the distributed database of the second sub-chain after being at least partially recognized by the common recognition node and verified by the member nodes of the second sub-chain.
In a further illustrated embodiment, the first data includes an identification of the second data and the second data; the acquisition unit is further configured to: and acquiring the second data from the distributed database of the first sub-chain based on the identification of the second data so as to acquire the first data.
In yet another illustrated embodiment, the first data further includes an event identification to demarcate a message channel in which the event is located upon receiving an event notification in which the first data is included in the distributed database of the first sub-chain.
In yet another illustrated embodiment, the first data includes financial asset data; the first node is a node corresponding to an original equity person of the financial asset data.
In yet another illustrated embodiment, the second data includes ABS asset slice data; the first node is a node corresponding to an original equity person of the ABS asset data.
In a further illustrated embodiment, the first data further includes a hash digest of the second data; the acquisition unit is further configured to:
acquiring first historical data of the second data from the distributed database of the first sub-chain based on the identification of the second data, wherein the first historical data comprises a hash digest (TxID) of at least one first transaction recorded in the distributed database of the first sub-chain and a hash digest of second data contained in the first transaction, and the first transaction contains the identification of the second data;
Acquiring second historical data of the second data from the distributed database of the second sub-chain based on the identification of the second data, wherein the second historical data comprises a hash digest (TxID) of at least one second transaction recorded in the distributed database of the second sub-chain and a hash digest of second data contained in the second transaction, and the second transaction contains the identification of the second data;
obtaining tracing data of the second data based on the first historical data and the second historical data, wherein the tracing data comprises a hash digest (TxID) of the at least one first transaction and a hash digest (TxID) of the at least one second transaction, and the hash digest (TxID) of the at least one first transaction and the hash digest (TxID) of the at least one second transaction which are included in the tracing data correspond to hash digests of non-repeated second data.
In yet another illustrated embodiment, the blockchain network system is configured in a hyper ledger Fabric blockchain network system; the consensus node is a sequencing node.
In yet another illustrated embodiment, the blockchain network system is a federated blockchain network system; the consensus node is a federation member node.
Accordingly, the present specification also provides a computer apparatus comprising: a memory and a processor; the memory has stored thereon a computer program executable by the processor; and when the processor runs the computer program, executing the blockchain transaction method executed by the first node.
Accordingly, the present specification also provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the blockchain transaction method performed by the first stage described above.
According to the technical scheme, in the blockchain transaction method and the blockchain transaction device provided by the specification, the first node issues the first data stored in the first sub-chain to the second sub-chain in the blockchain network system of the multiple sub-chains, and the authenticity and the reliability of the data on the second sub-chain are effectively improved based on the tamper-proof characteristic of the first sub-chain.
Drawings
FIG. 1 is a flow chart of a blockchain transaction method according to an embodiment of the disclosure;
FIG. 2 is a flow chart of a blockchain transaction method applied in an ABS asset data distribution scenario according to an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of a blockchain transaction device according to an embodiment of the present disclosure;
FIG. 4 is a hardware block diagram illustrating an embodiment of a blockchain transaction device provided herein.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with one or more embodiments of the present specification. Rather, they are merely examples of apparatus and methods consistent with aspects of one or more embodiments of the present description as detailed in the accompanying claims.
It should be noted that: in other embodiments, the steps of the corresponding method are not necessarily performed in the order shown and described in this specification. In some other embodiments, the method may include more or fewer steps than described in this specification. Furthermore, individual steps described in this specification, in other embodiments, may be described as being split into multiple steps; while various steps described in this specification may be combined into a single step in other embodiments.
Based on a tamper-proof mechanism of the blockchain, the application of data storage or certification on the blockchain is becoming wider and wider. In view of the nature of blockchain distributed storage, data stored on a blockchain may be known to a majority of nodes on the blockchain, which may include nodes that are independent of the stored data, thereby increasing the privacy security risk of the blockchain storing the data.
Taking an application scenario of blockchain storage or certification for financial asset data in the financial field as an example, in this scenario, the financial asset data should generally be known only to the owner or related (such as the original equity person) of the financial asset data, the manager (such as the asset management institution) of the financial asset data, and the like, because of its strong private attribute and privacy attribute, and the specific application requirement puts new demands on privacy protection or isolation of the blockchain storage data.
The above problems are solved by a blockchain system comprising a plurality of subchains, wherein different organization mechanisms are distributed into different blockchain subchains according to the acquisition authority of data, so that data isolation is realized among different subchains. The common node of the multiple sub-chains generally has higher data authority, and data can be published on the multiple sub-chains, which puts higher demands on the integrity or security of the common node.
In view of this, in one embodiment shown in the present specification, a blockchain transaction method is provided for use with a blockchain system including a plurality of consensus nodes, the blockchain system may include a plurality of sub-chains; a first sub-chain of the blockchain system includes a first node; the second sub-chain of the blockchain system also includes the first node.
The blockchain network in one or more embodiments of the present disclosure may specifically refer to a P2P network system with a distributed data storage structure, where each node device is implemented by a consensus mechanism, and data in the blockchain is distributed in blocks (blocks) that are temporally connected, where a later block includes a data summary of a previous block, and a full backup of data of all or part of nodes is implemented according to a specific consensus mechanism (such as POW, POS, DPOS or PBFT). Those skilled in the art are familiar with that, since the blockchain network system operates under the corresponding consensus mechanism, the data recorded in the blockchain database is difficult to be tampered by any node, for example, the blockchain adopting Pow consensus, and at least the attack of 51% computing power of the whole network is needed to tamper with the existing data, so that the blockchain network system has the characteristics of ensuring the security and preventing the attack and tampering of the data which are incomparable with other centralized database systems. Therefore, the data recorded in the distributed database of the blockchain cannot be attacked or tampered, so that the true reliability of the data information stored in the distributed database of the blockchain is ensured.
Example types of blockchain networks may include public blockchain networks, private blockchain networks, and federated blockchain networks. Although the term blockchain is typically associated with bitcoin cryptocurrency networks, blockchain as used herein may refer to DLS (distributed ledger system) without reference to any particular use case.
In a common blockchain network, the consensus process is controlled by nodes of the consensus network. For example, hundreds, thousands, or even millions of entities may cooperate in a public blockchain network, each entity operating at least one node in the public blockchain network. Thus, a public blockchain network may be considered a public network with respect to participating entities. An example public blockchain network includes a bitcoin network, which is a peer-to-peer payment network. The bitcoin network utilizes a distributed ledger, known as a blockchain. However, as noted above, the term blockchain is generally used to refer to a distributed ledger that does not refer specifically to a bitcoin network.
Typically, public blockchain networks support public transactions. Public transactions are shared with all nodes within the public blockchain network and stored in the global blockchain. A global blockchain is a blockchain that replicates across all nodes. That is, for a global blockchain, all nodes are in a completely consistent state. To achieve consensus (e.g., agree to add blocks to the blockchain), a consensus protocol is implemented within the common blockchain network. Example consensus protocols include, but are not limited to, proof of work (POW) implemented in bitcoin networks.
Typically, a private blockchain network is provided to a specific entity that centrally controls read and write rights. The entity controls which nodes can participate in the blockchain network. Thus, private blockchain networks are often referred to as licensed networks, which impose restrictions on who is allowed to participate in the network and its participation level (e.g., only in certain transactions). Various types of access control mechanisms may be used (e.g., existing participants vote to add new entities, and a regulatory authority may control admission).
Typically, federated blockchain networks are proprietary among the participating entities. In a federated blockchain network, the consensus process is controlled by an authorized set of nodes (federated member nodes), one or more of which are operated by a corresponding entity (e.g., an enterprise). For example, a federation consisting of ten (10) entities (e.g., enterprises) can operate a federated blockchain network in which each entity operates at least one node. Thus, a federated blockchain network may be considered a private network as far as participating entities are concerned. In some examples, each entity (node) must sign each block to make the block valid and add the valid block to the blockchain. In some examples, at least a subset of entities (nodes) (e.g., at least 7 entities) must sign each block to make the block valid and add the valid block to the blockchain.
It is contemplated that the embodiments provided herein can be implemented in any suitable type of blockchain network system, and that the "suitable types" described above are not limited to public, federated, or private chains as defined above.
A node (or node device) as described in one or more embodiments of the present specification refers to a node that can join the blockchain by following the installation of a corresponding node protocol, running a node protocol program, as the blockchain. The consensus node described in the embodiments of the present disclosure may include a node that is generated by validating or packaging the block content of a blockchain according to a consensus rule (or a consensus mechanism) that is complied with by the blockchain network system.
The blockchain network system described in one or more embodiments of the present disclosure may include a plurality of sub-chains, where the sub-chains are composed of at least some of the nodes in the blockchain network system, and the plurality of sub-chains may include the same node or may include different nodes. The blockchain transaction method described in the embodiments of the present disclosure is performed by a first node in the blockchain network system, where the first node belongs to both a first sub-chain and a second sub-chain.
Transactions (transactions) described in one or more embodiments herein refer to a piece of data created by a node device of a blockchain and that needs to be eventually published into a distributed database of the blockchain. Among the transactions in the blockchain are narrow transactions and broad transactions. A narrow transaction refers to a transfer of value issued by a user to a blockchain; for example, in a traditional bitcoin blockchain network, the transaction may be a transfer initiated by the user in the blockchain. While a generalized transaction refers to a piece of data with business intent that a user entity publishes to a blockchain through a node. The blockchain transaction method according to one or more embodiments of the present disclosure refers to a method for transmitting data with a service intention onto a blockchain in a transaction format, and functions as a tamper-proof mechanism of the blockchain to store the data with the service intention.
As shown in fig. 1, the blockchain transaction method provided in this embodiment includes:
step 102, receiving an event notification that first data is included in a distributed database of the first sub-chain.
The first data is recorded in the distributed database of the first sub-chain after the first sub-chain is subjected to the consensus verification, and is used as a node of the first sub-chain, and a client of the first node receives the event notification so as to update a storage database of the first sub-chain local to the first node.
In still another illustrated embodiment, the first node may set its message channel configuration parameter, and set the message receiving channels for different event message types respectively, so as to ensure that event messages with higher priority, such as the event notification in which the first data is recorded, are not blocked due to network congestion caused by concurrent transactions. Correspondingly, the first data further comprises an event identifier, and the event identifier is used for calibrating a message channel where the event is located when receiving the event notification that the first data is recorded in the distributed database of the first sub-chain, so that the execution efficiency of the system is improved.
It should be noted that, the "distributed database" of the blockchain or the subchain according to the embodiments provided in the present specification includes not only the blockdata of the corresponding blockchain, but also State data related to the change of the blockdata, such as data stored locally at each node device in the form of a key value pair, which is also referred to as "World State", which is locally stored by the node device of the blockchain or the subchain.
Step 104, obtaining the first data from the distributed database of the first sub-chain.
The present embodiment is not limited to a specific manner in which the first node acquires the first data. In an embodiment, the first node may query the distributed database of the first sub-chain based on the identification of the first data (e.g., the identification or index or key value of the first data) to obtain the first data. In yet another embodiment, the first data comprises an identification of the second data and the second data; the obtaining the first data from the distributed database of the first sub-chain includes: and acquiring the second data from the distributed database of the first sub-chain based on the identification of the second data so as to acquire the first data.
The specific manner in which the first data is obtained in the above embodiments may be performed by the first node invoking an intelligent contract deployed on the blockchain network system or the first sub-chain. To further provide context for embodiments of the present specification, in a blockchain network, applications may be developed, tested, and deployed for execution within the blockchain network. Example applications may include, but are not limited to, smart contracts. An intelligent contract may be described as a digital representation of a legal contract having the real world affecting contract terms of parties. The smart contracts are implemented, stored, updated (as needed), and executed within the blockchain network. Contractors associated with the intelligent contracts are represented as nodes in a blockchain network.
In some examples, the smart contract may store data that may be used to record information, facts, associations, balances, and any other information needed to implement the contract execution logic. A smart contract may be described as a computer-executable program that consists of functions that may be created as instances (instances) of the smart contract, invoking functions to execute the logic of the smart contract.
In a technical aspect, a smart contract may be implemented based on objects and object-oriented classes. For example, the terms and components of a smart contract may be represented as objects that are processed by an application implementing the smart contract. A smart contract (or an object in a smart contract) may invoke another smart contract (or an object in the same smart contract) like other object-oriented objects. For example, a call made by an object may be a call to create, update, delete, propagate, or communicate with an object of another class. Calls between objects may be implemented by functions, methods, application programming interfaces (application programming interface, APIs), or other calling mechanisms. For example, a first object may call a function to create a second object.
In this embodiment, the smart contract for acquiring the first data may be deployed in the blockchain network system or the first sub-chain, and invoked and executed by a first node having an execution authority; the specific call data may include an index of the first data or an identification of the second data, an interface address of the smart contract, a function name corresponding to the query, and the like, so as to obtain the first data from the distributed database of the first sub-chain.
Step 106, packaging the first data into a transaction; the transaction includes the first data.
Based on the transaction format rule setting of the second sub-chain, packaging the first data into a transaction; for example, the transaction may include the first data, a digital signature of the first data by the first node, a certificate or public key of the first node, and other content data.
And step 108, sending the transaction to the second sub-chain, so that the transaction is recorded in a distributed database of the second sub-chain after being at least partially recognized by the common recognition node and verified by member nodes of the second sub-chain.
The specific process by which the transaction is recorded by the distributed database of the second sub-chain may be different according to the common knowledge mechanism of the blockchain system, which is not limited in this specification. For example, the blockchain network system described above may be configured in a hyper ledger Fabric blockchain network system; the consensus node of the blockchain network system can comprise a sequencing node of the Fabric system, plays a role in consensus for creation of the subchains and release of financial asset data on the subchains, and can be implemented based on CFT. Those skilled in the art will appreciate that the blockchain network system may be configured as a federated blockchain network system, and accordingly, the consensus node of the blockchain network system is a member node of the federation, and the consensus algorithm may be implemented based on PBFT or the like.
Those skilled in the art will appreciate that the information stored in the distributed database of the first sub-chain cannot be tampered with at will based on the tamper-proof principle of the first sub-chain, e.g., the consensus mechanism and distributed storage scheme implemented by the first sub-chain, or the anchoring principle of the sub-chain block information and the main chain block information implemented by the blockchain network system. Acquiring the first data from the first sub-chain and sending the first data to the second sub-chain, so that the authenticity and the reliability of the first data source are further ensured; other member nodes except the first node on the second sub-chain can request to the member node of the first sub-chain or the consensus node of the blockchain network system to verify whether the first data issued in the second sub-chain is consistent with the first data stored in the first sub-chain, so that the first node can be effectively prevented from privately tampering with the first data, and the security of transaction data issued in the second sub-chain is improved.
The blockchain transaction method provided in the present specification will be described in detail below by taking an application scenario of blockchain certification for financial asset data in the field of financial science and technology as an example.
The original owners of the financial assets can be called original equity persons, generally are asset service institutions and are responsible for managing the information of the financial assets, performing operations such as publishing, changing and the like of the assets, and having corresponding original equity person business systems. In the above business application scenario, the original equity person of the financial asset needs to send the detailed information and the change information of the financial asset data to the corresponding plan manager, such as a management organization of a special plan in the ABS business, so that the plan manager performs obligations of checking supervision and updating management on the process of packaging and issuing securities of the asset, and performs obligations of managing the flow of funds in the whole process.
Therefore, in this embodiment, the original equity person of the financial asset data may be the entity corresponding to the first node described in the above embodiment, and the financial asset data may be the first data described in the above embodiment, including the original creation data or the modification data of the financial asset; the first node may send the first data into a second sub-chain to assist a planning manager of the first data in fulfilling supervisory and administrative obligations.
In this embodiment, the original equity node of the above-mentioned financial asset may establish an asset data pool for all the financial asset data that it holds or manages; in this embodiment, the financial asset data included in the asset data pool may be stored in another blockchain sub-chain by the original equity node, and the sub-chain may be the first sub-chain according to the above embodiment; based on the tamper-proof mechanism of the first sub-chain, the financial asset data in the asset data pool is guaranteed to be tampered maliciously.
In this embodiment, the blockchain network system may be configured in a hyper ledger Fabric blockchain network system; the consensus node of the blockchain network system can comprise a sequencing node of the Fabric system, plays a role in consensus for creation of the subchains and release of financial asset data on the subchains, and can be implemented based on CFT.
When the financial asset data is ABS asset data, the first data may include description information of ABS asset data (such as background contract information of the ABS asset, related person information, etc.) and ABS asset slice data (such as asset content status data of the ABS asset at different time nodes to describe changes of the ABS asset) or an identification of the ABS asset slice data.
Fig. 2 illustrates a blockchain transaction method applied to ABS asset data distribution provided by the present embodiment, in which an original equity node has stored ABS asset data (including asset original creation data and asset update data) that it holds or manages in a first sub-chain that it is a node. It should be noted that the blockchain transaction method provided in the present specification does not limit the first data to be sent to the distributed database of the first sub-chain by the first node. The blockchain transaction method comprises the following steps:
step 202, the original equity node receives event notification that first data is recorded in a distributed database of the first sub-chain; the first data includes description information of ABS asset data and an identification of ABS asset slice data.
In still another illustrated embodiment, the original equity node may set its message channel configuration parameters, and set the message receiving channels for different event message types, so as to ensure that event messages with higher priority, such as the event notification in which the first data is recorded, are not blocked due to network congestion caused by concurrent transactions. Correspondingly, the first data further comprises an event identifier, and the event identifier is used for calibrating a message channel where the event is located when receiving the event notification that the first data is recorded in the distributed database of the first sub-chain, so that the execution efficiency of the system is improved.
Step 204, the original equity node acquires the first data from the distributed database of the first sub-chain based on the identification of the ABS asset slice data.
For the original equity node, ABS asset slice data corresponding to an identification of ABS asset slice data included in the first data may be acquired based on the uplink notification of the first data, which may be regarded as second data.
The ABS property slice data includes status data of the ABS property at different points in time, for example, for loan properties, the content and value of the property data will change accordingly as repayment by the repayment person occurs at different points in time. The original rights and interests person can set corresponding identifications for slice data of the ABS assets at different time points, and issue the slice data of the ABS assets and the corresponding identifications thereof in the first sub-chain; and based on a tamper-proof mechanism of the first sub-chain, the ABS asset slice data is used as a certificate. And acquiring the first data from the first sub-chain, so that the source reliability of the first data to be sent to the second sub-chain is improved.
Step 206, the original equity node encapsulates the first data into a transaction, where the transaction includes the first data.
Based on the transaction format rule setting of the second sub-chain, packaging the first data into a transaction; for example, the transaction may include the first data, a digital signature of the first data by the original equity node, a certificate or public key of the original equity node, and so on.
Step 208, the original equity node sends the transaction to the second sub-chain, so that the transaction is authenticated by at least part of the consensus nodes and member nodes of the second sub-chain and then is recorded in the distributed database of the second sub-chain.
The specific process by which the transaction is recorded by the distributed database of the second sub-chain may be different according to the common knowledge mechanism of the blockchain system, which is not limited in this specification. For example, the blockchain network system described above may be configured in a hyper ledger Fabric blockchain network system; the consensus node of the blockchain network system can comprise a sequencing node of the Fabric system, plays a role in consensus for creation of the subchains and release of financial asset data on the subchains, and can be implemented based on CFT.
For ABS asset data issued into the second sub-chain, in addition to the creation and updating of the ABS asset data by the first node, which is the original equity, the schedule manager node, which performs supervisory management on the ABS asset data, also enjoys the right to update management on the ABS asset data; thus, in addition to being data updated in the first sub-chain by the original equity node, the ABS assets sent into the second sub-chain are also data updated in the second sub-chain by the intended manager node.
For potential investors in ABS assets, it is important to obtain all change records of an ABS asset from creation to sale; the node serving as the original equity of the ABS asset can provide a source tracing for the modification process of the ABS asset for potential investors or investors of the ABS asset based on the blockchain transaction methods described in the embodiments of the present specification.
Specifically, the first data may further include a hash digest of the ABS asset slice data; (i.e., the hash digest of the second data) as shown in fig. 2, the ABS asset data tracing process performed by the above-mentioned original equity node includes:
step 210, the original equity node obtains, based on the identification of the ABS asset slice data, first historical data of the ABS asset slice data at the distributed database of the first sub-chain, the first historical data including a hash digest (TxID) of at least one first transaction included in the distributed database of the first sub-chain and a hash digest of ABS asset slice data included in the first transaction, the first transaction including the identification of the ABS asset slice data.
Step 212, the original equity node obtains, based on the identification of the ABS asset slice data, second historical data of the ABS asset slice data at the distributed database of the second sub-chain, the second historical data including a hash digest (TxID) of at least one second transaction included in the distributed database of the second sub-chain and a hash digest of ABS asset slice data included in the second transaction, the second transaction including the identification of the ABS asset slice data.
Step 214, the original equity node obtains tracing data of the ABS asset slice data based on the first history data and the second history data, the tracing data including a hash digest (TxID) of the at least one first transaction and a hash digest (TxID) of the at least one second transaction, and the tracing data including the hash digest (TxID) of the at least one first transaction and the hash digest (TxID) of the at least one second transaction corresponding to hash digests of non-duplicate ABS asset slice data.
Specifically, after the original equity node obtains the first historical data and the second historical data, the hash digests of the ABS slice data may be subjected to deduplication processing, the first transaction or the second transaction (only one of which is removed) having the hash digest values of the repeated ABS slice data in the first historical data and the second historical data is removed, and then the hash digests (TxID) of the first transaction and the hash digest (TxID) of the second transaction are arranged according to the order of time, so that the history change data about the ABS asset slice data, which are arranged according to the order of time, may be obtained. And if the original equity person service system needs to inquire the asset state details corresponding to the TxID, acquiring a corresponding value by commonly calling an inquiry interface of the first sub-chain or the second sub-chain.
Corresponding to the above-described flow implementation, the embodiment of the present disclosure further provides a blockchain transaction device 30. The blockchain transaction device 30 may be implemented in software, or may be implemented in hardware or a combination of hardware and software. Taking software implementation as an example, the device in a logic sense is formed by reading corresponding computer program instructions into a memory through a CPU (Central Process Unit, central processing unit) of the device. In addition to the CPU, the memory, and the storage shown in fig. 4, the device in which the above apparatus is located generally includes other hardware such as a chip for performing wireless signal transmission and reception, and/or other hardware such as a board card for implementing a network communication function.
As shown in fig. 3, the present disclosure also provides a blockchain transaction device 30 for use in a blockchain system including a plurality of consensus nodes, the blockchain system may include a plurality of subchains; a first sub-chain of the blockchain system includes a first node; the second sub-chain of the blockchain system also includes the first node; the blockchain transaction device 30 is applied to the first node, and includes:
a receiving unit 302, configured to receive an event notification that first data is included in the distributed database of the first sub-chain;
An obtaining unit 304, configured to obtain the first data from a distributed database of the first sub-chain;
a packaging unit 306, configured to package the first data into a transaction, where the transaction includes the first data;
and a sending unit 308, configured to send the transaction to the second sub-chain, so that the transaction is authenticated by at least part of the consensus node and a member node of the second sub-chain and is recorded in a distributed database of the second sub-chain.
In a further illustrated embodiment, the first data includes an identification of the second data and the second data; the obtaining unit 304 is further configured to: and acquiring the second data from the distributed database of the first sub-chain based on the identification of the second data so as to acquire the first data.
In yet another illustrated embodiment, the first data further includes an event identification to demarcate a message channel in which the event is located upon receiving an event notification in which the first data is included in the distributed database of the first sub-chain.
In yet another illustrated embodiment, the first data includes financial asset data; the first node is a node corresponding to an original equity person of the financial asset data.
In yet another illustrated embodiment, the second data includes ABS asset slice data; the first node is a node corresponding to an original equity person of the ABS asset data.
In a further illustrated embodiment, the first data further includes a hash digest of the second data; the obtaining unit 304 is further configured to:
acquiring first historical data of the second data from the distributed database of the first sub-chain based on the identification of the second data, wherein the first historical data comprises a hash digest (TxID) of at least one first transaction recorded in the distributed database of the first sub-chain and a hash digest of second data contained in the first transaction, and the first transaction contains the identification of the second data;
acquiring second historical data of the second data from the distributed database of the second sub-chain based on the identification of the second data, wherein the second historical data comprises a hash digest (TxID) of at least one second transaction recorded in the distributed database of the second sub-chain and a hash digest of second data contained in the second transaction, and the second transaction contains the identification of the second data;
Obtaining tracing data of the second data based on the first historical data and the second historical data, wherein the tracing data comprises a hash digest (TxID) of the at least one first transaction and a hash digest (TxID) of the at least one second transaction, and the hash digest (TxID) of the at least one first transaction and the hash digest (TxID) of the at least one second transaction which are included in the tracing data correspond to hash digests of non-repeated second data.
In yet another illustrated embodiment, the blockchain network system is configured in a hyper ledger Fabric blockchain network system; the consensus node is a sequencing node.
In yet another illustrated embodiment, the blockchain network system is a federated blockchain network system; the consensus node is a federation member node.
The implementation process of the functions and roles of each unit in the blockchain transaction device 30 is specifically described in the implementation process of the corresponding steps in the blockchain transaction method executed by the first node, and the relevant points are only described in the part of the method embodiments, and are not repeated here.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical modules, i.e., may be located in one place, or may be distributed over a plurality of network modules. Some or all of the units or modules may be selected according to actual needs to achieve the purposes of the present description. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
The apparatus, units, modules illustrated in the above embodiments may be implemented in particular by a computer chip or entity or by a product having a certain function. A typical implementation device is a computer, which may be in the form of a personal computer, laptop computer, cellular telephone, camera phone, smart phone, personal digital assistant, media player, navigation device, email device, game console, tablet computer, wearable device, or a combination of any of these devices.
Corresponding to the above method embodiments, embodiments of the present disclosure also provide a computer device, as shown in fig. 4, which includes a memory and a processor. Wherein the memory has stored thereon a computer program executable by the processor; the processor, when executing the stored computer program, performs the steps of the blockchain transaction method performed by the first node in the embodiments of the present disclosure. For a detailed description of the steps of the blockchain transaction method performed by the first node, please refer to the previous descriptions, which are not repeated.
Corresponding to the above method embodiments, embodiments of the present description further provide a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the blockchain transaction method performed by the first node in the embodiments of the present description. For a detailed description of the steps of the blockchain transaction method performed by the first node, please refer to the previous descriptions, which are not repeated.
The foregoing description of the preferred embodiments is provided for the purpose of illustration only, and is not intended to limit the scope of the disclosure, since any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the disclosure are intended to be included within the scope of the disclosure.
In one typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include volatile memory in a computer-readable medium, random Access Memory (RAM) and/or nonvolatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of computer-readable media.
Computer readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data.
Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
It will be appreciated by those skilled in the art that embodiments of the present description may be provided as a method, system, or computer program product. Accordingly, embodiments of the present specification may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Moreover, embodiments of the present description may take the form of a computer program product on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
Claims (10)
1. A blockchain transaction method is applied to a blockchain system comprising a plurality of consensus nodes, wherein the blockchain system can comprise a plurality of sub-chains; a first sub-chain of the blockchain system includes a first node; the second sub-chain of the blockchain system also includes the first node; the first node comprises a node of an original equity person of ABS asset data; the first sub-chain stores ABS asset data of the original equity person; the method is performed by a first node, comprising:
receiving event notifications for ABS asset data that are recorded to a distributed database of the first sub-chain; the ABS asset data comprises description information of the ABS asset data, hash digests of the ABS asset slice data and identification of the ABS asset slice data; the ABS asset slice data comprise state data of the ABS asset at different time points, and the identification of the ABS asset slice data is an identification corresponding to slice data of the ABS asset at different time points; the ABS asset slice data and the identification of the ABS asset slice data are issued on the first sub-chain; based on the tamper-proof mechanism of the first sub-chain, taking the ABS asset slice data as a certificate;
Acquiring the ABS asset slice data from a distributed database of the first sub-chain based on the identification of the ABS asset slice data to acquire the ABS asset data;
encapsulating the ABS asset data into a transaction, the transaction comprising the ABS asset data;
transmitting the transaction to the second sub-chain, so that the transaction is recognized by at least part of the recognized nodes and verified by member nodes of the second sub-chain and then is recorded in a distributed database of the second sub-chain, and the ABS asset data is supervised and managed by a planned manager node in the second sub-chain;
acquiring first historical data of the ABS asset slice data from the distributed database of the first sub-chain based on the identification of the ABS asset slice data, wherein the first historical data comprises a hash digest of at least one first transaction recorded in the distributed database of the first sub-chain and a hash digest of the ABS asset slice data contained in the first transaction, and the first transaction contains the identification of the ABS asset slice data;
acquiring second historical data of the ABS asset slice data from the distributed database of the second sub-chain based on the identification of the ABS asset slice data, wherein the second historical data comprises hash digests of at least one second transaction recorded in the distributed database of the second sub-chain and hash digests of ABS asset slice data contained in the second transaction, and the second transaction contains the identification of the ABS asset slice data;
And obtaining tracing data of the ABS asset slice data based on the first historical data and the second historical data, wherein the tracing data comprises hash digests of the at least one first transaction and the at least one second transaction, and the hash digests of the at least one first transaction and the at least one second transaction which are included in the tracing data correspond to hash digests of unrepeated ABS asset slice data.
2. The method of claim 1, the ABS asset data further comprising an event identification to demarcate a message channel in which the event is located upon receiving an event notification that the ABS asset data is included in the distributed database of the first sub-chain.
3. The method of claim 1, the blockchain system architecture being in a hyper ledger Fabric blockchain system; the consensus node is a sequencing node.
4. The method of claim 1, the blockchain system being a federated blockchain system; the consensus node is a federation member node.
5. A blockchain transaction device is applied to a blockchain system comprising a plurality of consensus nodes, wherein the blockchain system can comprise a plurality of sub-chains; a first sub-chain of the blockchain system includes a first node; the second sub-chain of the blockchain system also includes the first node; the first node comprises a node of an original equity person of ABS asset data; the first sub-chain stores ABS asset data of the original equity person; the device is applied to the first node end and comprises:
A receiving unit for receiving event notifications of ABS asset data being incorporated into the distributed database of the first sub-chain; the ABS asset data comprises description information of the ABS asset data, hash digests of the ABS asset slice data and identification of the ABS asset slice data; the ABS asset slice data comprise state data of the ABS asset at different time points, and the identification of the ABS asset slice data is an identification corresponding to slice data of the ABS asset at different time points; the ABS asset slice data and the identification of the ABS asset slice data are issued on the first sub-chain; based on the tamper-proof mechanism of the first sub-chain, taking the ABS asset slice data as a certificate;
an obtaining unit, configured to obtain the ABS asset slice data from the distributed database of the first sub-chain based on the identification of the ABS asset slice data, so as to obtain the ABS asset data; acquiring first historical data of the ABS asset slice data from the distributed database of the first sub-chain based on the identification of the ABS asset slice data, wherein the first historical data comprises a hash digest of at least one first transaction recorded in the distributed database of the first sub-chain and a hash digest of the ABS asset slice data contained in the first transaction, and the first transaction contains the identification of the ABS asset slice data; acquiring second historical data of the ABS asset slice data from the distributed database of the second sub-chain based on the identification of the ABS asset slice data, wherein the second historical data comprises hash digests of at least one second transaction recorded in the distributed database of the second sub-chain and hash digests of ABS asset slice data contained in the second transaction, and the second transaction contains the identification of the ABS asset slice data; obtaining trace data of the ABS asset slice data based on the first historical data and the second historical data, wherein the trace data comprises a hash digest of the at least one first transaction and a hash digest of the at least one second transaction, and the hash digest of the at least one first transaction and the hash digest of the at least one second transaction included in the trace data correspond to hash digests of unrepeated ABS asset slice data;
The packaging unit is used for packaging the ABS asset data into a transaction, wherein the transaction comprises the ABS asset data;
and the sending unit is used for sending the transaction to the second sub-chain, so that the transaction is recorded in the distributed database of the second sub-chain after being at least partially recognized by the common recognition node and verified by the member nodes of the second sub-chain, and the ABS asset data is supervised and managed by the planned manager node in the second sub-chain.
6. The apparatus of claim 5, the ABS asset data further comprising an event identifier to demarcate a message channel in which the event is located upon receiving an event notification that the ABS asset data is included in the distributed database of the first sub-chain.
7. The apparatus of claim 5, the blockchain system architecture being in a hyper ledger Fabric blockchain system; the consensus node is a sequencing node.
8. The apparatus of claim 5, the blockchain system being a federated blockchain system; the consensus node is a federation member node.
9. A computer device, comprising: a memory and a processor; the memory has stored thereon a computer program executable by the processor; the processor, when running the computer program, performs the method of any one of claims 1 to 4.
10. A computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the method of any of claims 1 to 4.
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111046437A (en) * | 2019-10-31 | 2020-04-21 | 中国科学院计算技术研究所 | Block chain parallel transaction processing method and system based on isomorphic multi-chain and terminal |
| CN110912987B (en) * | 2019-11-20 | 2023-02-14 | 腾讯科技（深圳）有限公司 | Information processing method and related equipment |
| CN111131438B (en) * | 2019-12-20 | 2023-04-07 | 北京同邦卓益科技有限公司 | Method and apparatus for accessing block chains |
| CN111539803B (en) * | 2020-04-02 | 2023-08-29 | 普洛斯科技(重庆)有限公司 | Mortgage financing monitoring method, system and computer readable storage medium |
| CN111586109B (en) * | 2020-04-17 | 2023-04-28 | 上海坤仪金科信息技术有限公司 | Block chain cloud storage user data deduplication solution method |
| CN111563811B (en) * | 2020-04-30 | 2023-10-17 | 普洛斯科技(重庆)有限公司 | Mortgage inventory method, system and computer readable storage medium |
| CN112508559A (en) * | 2020-12-01 | 2021-03-16 | 浙商银行股份有限公司 | Block chain privacy transaction multi-level consensus method, equipment and storage medium |
| CN113628047B (en) * | 2021-07-15 | 2024-02-02 | 金陵科技学院 | Auxiliary processing system for transaction event |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107993069A (en) * | 2017-12-13 | 2018-05-04 | 清华大学 | A kind of online transaction method and system based on block chain network |
| CN108460598A (en) * | 2018-04-18 | 2018-08-28 | 北京天德科技有限公司 | A kind of real-time automation supervision reporting system based on double-strand framework block chain |
| CN109003078A (en) * | 2018-06-27 | 2018-12-14 | 阿里巴巴集团控股有限公司 | Intelligent contract call method and device, electronic equipment based on block chain |
| CN109191124A (en) * | 2018-08-16 | 2019-01-11 | 北京京东尚科信息技术有限公司 | Block chain network, dispositions method and storage medium |
| CN109242681A (en) * | 2018-08-21 | 2019-01-18 | 北京京东金融科技控股有限公司 | Storage method, device, equipment and the system of asset data |
| WO2019072137A1 (en) * | 2017-10-13 | 2019-04-18 | 中国银联股份有限公司 | Method and system for digital currency transaction verification and registration |
| CN109739827A (en) * | 2018-12-19 | 2019-05-10 | 北京第一视频科学技术研究院有限公司 | A kind of block chain storage system based on double-strand framework |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10097356B2 (en) * | 2015-07-02 | 2018-10-09 | Nasdaq, Inc. | Systems and methods of secure provenance for distributed transaction databases |
| CN111724150B (en) * | 2017-03-28 | 2023-11-24 | 创新先进技术有限公司 | Service request processing method and device |
-
2019
- 2019-06-21 CN CN201910543839.2A patent/CN110310203B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019072137A1 (en) * | 2017-10-13 | 2019-04-18 | 中国银联股份有限公司 | Method and system for digital currency transaction verification and registration |
| CN107993069A (en) * | 2017-12-13 | 2018-05-04 | 清华大学 | A kind of online transaction method and system based on block chain network |
| CN108460598A (en) * | 2018-04-18 | 2018-08-28 | 北京天德科技有限公司 | A kind of real-time automation supervision reporting system based on double-strand framework block chain |
| CN109003078A (en) * | 2018-06-27 | 2018-12-14 | 阿里巴巴集团控股有限公司 | Intelligent contract call method and device, electronic equipment based on block chain |
| CN109191124A (en) * | 2018-08-16 | 2019-01-11 | 北京京东尚科信息技术有限公司 | Block chain network, dispositions method and storage medium |
| CN109242681A (en) * | 2018-08-21 | 2019-01-18 | 北京京东金融科技控股有限公司 | Storage method, device, equipment and the system of asset data |
| CN109739827A (en) * | 2018-12-19 | 2019-05-10 | 北京第一视频科学技术研究院有限公司 | A kind of block chain storage system based on double-strand framework |
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